Fatigue test bench for rubber sealing element

Abstract

The utility model relates to the technical field of rubber sealing element fatigue tests, in particular to a rubber sealing element fatigue test bench which comprises a base, a fixing plate is fixedly connected to the upper surface of the base, two sliding rods are fixedly connected to each of the front face and the back face of the fixing plate, and sliding sleeves are slidably connected to the outer surfaces of the sliding rods. A mounting plate is fixedly connected to the upper surface of the sliding sleeve, a connecting frame is fixedly connected to the upper surface of the mounting plate, two threaded sleeves and two clamping plates are driven by a servo motor to get close to each other to clamp and fix the rubber sealing element, an air cylinder pushes the front mounting plate to move backwards, and the front mounting plate moves forwards to drive a connecting rod and a connecting disc to rotate forwards; and the connecting disc moves forwards to drive the connecting rod and the rear side mounting plate to move backwards, so that the rubber sealing element is repeatedly flexed, and the problem that the test efficiency of the rubber sealing element is influenced due to the fact that fatigue test tables of different models need to be replaced in an existing device to complete the test is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue tests of rubber seals, and particularly relates to a fatigue test bench for rubber seals. Background Technique

[0002] High-elastic polymer compounds are divided into two types: natural rubber and synthetic rubber. Natural rubber is processed from the gum extracted from plants such as rubber trees and rubber grasses; synthetic rubber is obtained by polymerization of various monomers.

[0003] Rubber seals are a type of general basic component in sealing devices and are a type of rubber product widely used in sealing technology. Because rubber is a precious elastic polymer material with a relatively wide temperature range, it will produce large deformations under relatively small stresses in different media, and this deformation can provide contact pressure to compensate for leakage gaps and achieve the purpose of sealing.

[0004] The fatigue test bench mainly conducts fatigue tests on rubber seals by continuously flexing, that is, the performance of rubber seals is represented by testing the number of times the rubber seals withstand repeated flexing. Since the rubber seals will be repeatedly flexed during the test, the rubber seals may break away from the test bench due to long-term repeated stress, and in order to adapt to rubber seals of different sizes, it may be necessary to replace different models of fatigue test benches to complete the test, which affects the test efficiency of rubber seals. Content of the Utility Model

[0005] To solve the problems raised in the above background technique, the utility model provides a fatigue test bench for rubber seals.

[0006] To achieve the above object, the utility model provides the following technical solution: A fatigue test bench for rubber seals, including a base, on the upper surface of the base is fixedly connected with a fixing plate, on the front and back surfaces of the fixing plate are fixedly connected with two sliding rods respectively, the outer surface of the sliding rod is slidably connected with a sliding sleeve, on the upper surface of the sliding sleeve is fixedly connected with a mounting plate, on the upper surface of the mounting plate is fixedly connected with a connecting frame, and the back surface of the connecting frame is slidably connected with the front surfaces of two clamping plates respectively.

[0007] Preferably, on the right side surface of the inner wall of the connecting frame is installed a servo motor, the output shaft of the servo motor is fixedly connected with the right end of screw a, the left end of screw a is fixedly connected with the right end of screw b, the left end of screw b is rotatably connected with the left side surface of the inner wall of the connecting frame, the outer surfaces of screw a and screw b are both threadedly connected with threaded sleeves, and the back surfaces of the two threaded sleeves are respectively fixedly connected with two clamping plates.

[0008] Preferably, the thread direction of screw a is opposite to that of screw b, and the number of teeth is the same.

[0009] Preferably, two clamping grooves are respectively formed on the opposite sides of the two clamping plates, and two clamping teeth are fixedly connected to the opposite sides of the two clamping plates.

[0010] Preferably, a connecting disk is rotatably connected to the upper surface of the fixing plate. The upper surface of the connecting disk is respectively rotatably connected to the lower surfaces of two connecting rods, and the opposite sides of the two connecting rods are respectively fixedly connected to the opposite sides of two mounting plates.

[0011] Preferably, a cylinder is installed on the lower surface of the mounting plate, and the telescopic end of the cylinder is fixedly connected to the front surface of the fixing plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, a servo motor drives two threaded sleeves and two clamping plates to approach each other to clamp and fix a rubber seal. The cylinder pushes the front mounting plate to move backward, and the forward movement of the front mounting plate drives the connecting rod and the connecting disk to rotate forward. The forward movement of the connecting disk drives the connecting rod and the rear mounting plate to move backward, so as to repeatedly flex the rubber seal in such a cycle, solving the problem that the existing device needs to replace fatigue test benches of different models to complete the test, which affects the test efficiency of the rubber seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a three-dimensional structural diagram of the sliding rod and the sliding sleeve in the present utility model;

[0017] Figure 3 is an enlarged structural diagram of part A in the present utility model;

[0018] In the figure: 1, base; 2, fixing plate; 3, sliding rod; 4, sliding sleeve; 5, mounting plate; 6, connecting frame; 7, connecting disk; 8, connecting rod; 9, servo motor; 10, screw a; 11, screw b; 12, threaded sleeve; 13, clamping plate; 14, clamping groove; 15, clamping tooth; 16, cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment

[0021] Please refer to Figures 1 - 3 , the present invention provides the following technical solutions: A fatigue test bench for rubber seals, including a base 1, on the upper surface of the base 1 is fixedly connected with a fixing plate 2, on the front and back surfaces of the fixing plate 2 are fixedly connected with two sliding rods 3 respectively, the outer surface of the sliding rod 3 is slidably connected with a sliding sleeve 4, on the upper surface of the sliding sleeve 4 is fixedly connected with a mounting plate 5, on the upper surface of the mounting plate 5 is fixedly connected with a connecting frame 6, and the back surface of the connecting frame 6 is slidably connected with the front surfaces of two clamping plates 13 respectively.

[0022] Specifically, by setting that on the right side surface of the inner wall of the connecting frame 6 is installed a servo motor 9, the output shaft of the servo motor 9 is fixedly connected with the right end of a screw rod a 10, the left end of the screw rod a 10 is fixedly connected with the right end of a screw rod b 11, the left end of the screw rod b 11 is rotatably connected with the left side surface of the inner wall of the connecting frame 6, the outer surfaces of the screw rod a 10 and the screw rod b 11 are both threadedly connected with a threaded sleeve 12, and the back surfaces of the two threaded sleeves 12 are respectively fixedly connected with two clamping plates 13;

[0023] Specifically, by setting that the thread direction of the screw rod a 10 is opposite to that of the screw rod b 11 and the number of teeth is the same;

[0024] The servo motor 9 drives the screw rod a 10 and the screw rod b 11 to rotate, the rotation of the screw rod a 10 and the screw rod b 11 drives the two threaded sleeves 12 and the two clamping plates 13 to approach each other, and the rubber seal is clamped and fixed by the two clamping plates 13.

[0025] Specifically, by setting that on the opposite surfaces of the two clamping plates 13 are respectively provided with two card slots 14, and on the opposite surfaces of the two clamping plates 13 are fixedly connected with two card teeth 15;

[0026] The rubber seal can be clamped and fixed by the card teeth 15, or the two card slots 14 can be blocked by the two clamping plates 13 being attached to each other to fix the rubber seal.

[0027] Specifically, by setting that on the upper surface of the fixing plate 2 is rotatably connected with a connecting disk 7, the upper surface of the connecting disk 7 is respectively rotatably connected with the lower surfaces of two connecting rods 8, and on the opposite surfaces of the two connecting rods 8 away from each other are respectively fixedly connected with the opposite surfaces of the two mounting plates 5;

[0028] Specifically, a cylinder 16 is installed on the lower surface of the mounting plate 5, and the telescopic end of the cylinder 16 is fixedly connected to the front surface of the fixed plate 2;

[0029] The cylinder 16 pushes the front mounting plate 5 to move backward. The backward movement of the mounting plate 5 drives the sliding sleeve 4 to slide forward on the outer surface of the sliding rod 3. The forward movement of the front mounting plate 5 drives the connecting rod 8 and the connecting disk 7 to rotate forward. The forward movement of the connecting disk 7 drives the connecting rod 8 and the rear mounting plate 5 to move backward, and so on to repeatedly flex the rubber seal.

[0030] The working principle and usage process of the present utility model:

[0031] When the present utility model is in use:

[0032] The servo motor 9 drives the screw a 10 and the screw b 11 to rotate. The rotation of the screw a 10 and the screw b 11 drives the two threaded sleeves 12 and the two clamping plates 13 to approach each other, and the rubber seal is clamped and fixed by the two clamping plates 13. The cylinder 16 pushes the front mounting plate 5 to move backward. The backward movement of the mounting plate 5 drives the sliding sleeve 4 to slide forward on the outer surface of the sliding rod 3. The forward movement of the front mounting plate 5 drives the connecting rod 8 and the connecting disk 7 to rotate forward. The forward movement of the connecting disk 7 drives the connecting rod 8 and the rear mounting plate 5 to move backward, and so on to repeatedly flex the rubber seal.

[0033] The circuits, electronic components, and modules involved are all prior art and can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fatigue test bench for rubber seals, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a fixing plate (2). Both the front and back surfaces of the fixing plate (2) are fixedly connected with two sliding rods (3). The outer surface of the sliding rod (3) is slidably connected with a sliding sleeve (4). The upper surface of the sliding sleeve (4) is fixedly connected with a mounting plate (5). The upper surface of the mounting plate (5) is fixedly connected with a connecting frame (6). The back surface of the connecting frame (6) is slidably connected with the front surfaces of two clamping plates (13) respectively.

2. The fatigue test bench for a rubber seal according to claim 1, characterized in that: A servo motor (9) is installed on the right side surface of the inner wall of the connecting frame (6). The output shaft of the servo motor (9) is fixedly connected with the right end of a screw a (10). The left end of the screw a (10) is fixedly connected with the right end of a screw b (11). The left end of the screw b (11) is rotatably connected with the left side surface of the inner wall of the connecting frame (6). The outer surfaces of both the screw a (10) and the screw b (11) are threadedly connected with a threaded sleeve (12). And the back surfaces of the two threaded sleeves (12) are respectively fixedly connected with two clamping plates (13).

3. The fatigue test bench for rubber seals according to claim 2, characterized in that: The thread direction of the screw a (10) is opposite to that of the screw b (11), and the number of teeth is the same.

4. A fatigue test bench for rubber seals according to claim 1, characterized in that: And two clamping grooves (14) are respectively formed on the opposite surfaces of the two clamping plates (13). And two clamping teeth (15) are fixedly connected to the opposite surfaces of the two clamping plates (13).

5. The fatigue test bench for a rubber seal according to claim 1, characterized in that: A connecting disk (7) is rotatably connected to the upper surface of the fixing plate (2). The upper surface of the connecting disk (7) is respectively rotatably connected with the lower surfaces of two connecting rods (8). And the opposite surfaces of the two connecting rods (8) away from each other are respectively fixedly connected with the opposite surfaces of the two mounting plates (5).

6. A fatigue test bench for rubber seals according to claim 1, characterized in that: A cylinder (16) is installed on the lower surface of the mounting plate (5). The telescopic end of the cylinder (16) is fixedly connected with the front surface of the fixing plate (2).

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